Safety latch for automobile doors



NOV. 7, 1950 H, M JARRETT 2,529,340

SAFETY LATCH FOR AUTOMOBILE DOORS Filed Aug. 3, 1948 Z /4 n?) i 5f/012W7'70 R www T/ Patented Nov. 7, 1950 v :2,529,340 v SAFETYLieren FonAU'roMoBmn moons' i. Harry'MJarrettJEaslt Jfvlartforld. onn.` I :iApplication Augosto, 194s," seriamaftaise This vinvention relates tov.locks for lautomobilel v l doors sand more v*particularly to iasupplementary lock for rear doorsof automobiles.

.It is an object of this invention to provide :an` extra or4supplementary,7 .lock for rear :doors of. automobiles which 4'dependsfor its `operation on` the positioning of the yarl-giacent front door.Thel principal purpose of this invention is to provide a vsupplementarylock :for the rear door of an automobilewhich vwill secure the rear doorlocked while the .front :door :is :closed .so vthat the rear' door willnot be :inadvertently openedjby children orothers in the .rear of:the-car., .and the opening ofthe rear :door is dependent `upon the'opening of the front door. The lock .alsouprevents the unauthorized.opening of the vrear V-doors from outside dof the car when thelfront-#doors are closed.

Still vanother yobject of invention is .to provide a .lock of this kind:which may be added .toy automobiles presently ;in `use as well asto'automobiles in `the .process of manufacture. YThis loc-k is lsoformedand adapted tozbe installed a minimum amount "of labor,.andyrequires very little rework .of vthe -ipresent automobile structuref or its incorporation. A :further object of this .invention istoprovide a lock of this kindwhich .may be .installed :in position throughonly ythe necessary openings in the post between the iront and reardoors-whichare required for its operation thus fobviating the necessity :of`form`ing other 'holes #to accomplish the installation or thedismantling lof the wall.`

` With Athe use -of 'a 'lock of this `kind -littleor no l attention isArequired vfrom rthe driver to watch p preventing the inadvertentdisposition ofthe lool;2

in inoperative condition.`

To the .foregoing .objects-v, `andotherswinchA mayhereinafter more fullyappear., the invention consists of the novel construction, .combinationand arrangementof parts; as will :be more specically vvreferred to andillustrated in the accom;v

panying drawings, butitisto be 4understood that changes, variations, andmodifications maybe resorted -to which yfall within v.the scopefofFthefin-z ventionf-as claimed. y

Inthe drawings: I

.'Fig-nre 1 .is ya;'horizontal section through the safetyilockconstructed .according to an embodi-` merrtnfthisinvention;

. Figurie 2 is `:1i/vertical.section;

:Ei'gure isa vertical section showing the bolts'v in :theirrretractedrela-tive position; and

Eigure'd is an fend view of the lock secured in the Ipost .between thefront andv rear doors .of san:

automobile. .Y

Referringrto .the fzdrawings, the :numeral HI designates :generally aan:improved lock forV locking fthegrear door of-a four-door automobile-when the'front door .isclosed The lock `lill is `adaptedto-fbesecuredor i-mounted within the 4.post of thel vehicle bodyfxedbetween the front and ,rear doors. bodies, .the trent and vrear doorsare hingedly connected to the sbody at the :frontand rear .ends

thereof respectively. The `free ends of the ldoors. normally .engage orabut .the side 'edges l'of the; verticalfpost .xed therebetween. Thelock.|lv.; of this .inventionis `adapted to be mounted with-- inthispost ,il l ,and slidahle .therein Ifor .engage-1.' mentwiththefdoors. l

The lock I!) is formed ofa :pair of .bolts f|2 andv I4 `fory :engagementwith .the door. .One of fthe bolts as the bolt l2 will :be ldisposed'Withinwftlfie;y

post H for engagement with the .frontfdoorFias shown :in Figures l, 2and 3 Vof the drawing. The rear bolt M is radapted to be engaged withina keeper |-5` carried by the lfree fedge of the rear;

door R.

The front bolt 1.2 .is substantially :cylindrical.inl

cross :section and tubular :opening from the rear end thereof. A latchas t6 is xed ion the forward end of the :bolt i12 being provided "with abevelle'd edge H :for engagement with the .treeedge of. the front-doorF. The latch l1, is adapt ed'to be slidably engaged through :an openingilt,

inta plate yliixed on the :forward-side of .thepost Ll. e The bolt'I2.is.free1y:slidable within'thepos'tI H: andis biased to the extended:position .in re` lationto the post cby :as-spring .20. A pin as .2| :is

therethrough. 'The :spring y2|)v fis @substantially frusto-conical inconfiguration having .the :d-' vergeht' end thereofcbearing :against:the free yor open.l inner end pfithe'front bolt .12. The other In .thestructure of ,most :automobile 5 said first bolt, and interengagingmeans including said means limiting the extension of said second bolt onsaid first and second bolts adapted to selectively lock said second boltin retracted position relative to said first bolt.

5. A safety lock for the rear doors of automobiles having front and reardoors and a post therebetween comprising a bore extending through saidpost, a first tubular bolt slidable in said bore, a second bolttelescopically carried by said first bolt, spring means interposedbetween said bolts urging them into extended position., second springmeans interposed between said post and said rst bolt for urging thelatter into forwardly projecting relationship to said post, acounter-bore formed in the rear edge of said post concentric with saidbore, and interengaging means carried by said rst and second bolts andadapted to lock said bolts in relatively retracted position.

HARRY M. JARRETT.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,724,759 Gravel Aug, 13, 19291,790,104 Levitt et a1. Jan. 27, 1931 2,273,149 Shannon et al. Feb. 17,1942 FOREIGN PATENTS Number Country Date 411,966 Great Britain June 21,1934

